Question

A closed gaseous system undergoes a reversible pro-
cess during which 200 kcal are rejected, the volume
changing from 4 mºto 2 mº and the pressure remain-
ing constant at 4.27 kg/cm. The change of internal
energy will be
(a) + 10 kcal
(6) - 10 kcal
(d) + 5 kcal
(e) - 5 kcal.
(c) o​

Answer 1

Answer:

           b)    i guess would be the correct answer

Answer 2

Explanation:

how is it correct...!! this solution from RK Jain book